Projectile device and projectile method

Abstract

The present invention discloses a projectile device and a projectile method, comprising a projectile tube, a base connected to the projectile tube and closing an opening at one end of the projectile tube, a piston located in the projectile tube, and a locking device arranged on the projectile tube for locking the projectile located in the projectile tube, an air cavity is formed between the base and the piston, a gas generating assembly is installed on the base, an annular flexible seal is sleeved and installed on the piston, an inflatable inner cavity is provided between the annular flexible seal and the piston for filling gas to force the annular flexible seal to expand and deform so that the annular flexible seal is in close contact with the inner wall of the projectile tube, and the inflatable inner cavity has an inflating port connected to the air cavity. The projectile device has a simple structure, low cost, easy to manufacture and assemble, stable and reliable operation, good sealing and pressure retention, and good projectile stability; the projectile method is to ignite multiple gas generators of the projectile device in batches one after another to extend the time of inflating the air cavity and realize low overload high-speed projectile.

Description

Technical Field

[0001] The present invention relates to the technical field of weapon launching equipment, and in particular to a launching device and a launching method. Background Art

[0002] The principle of the projectile device used for storing and projecting projectiles is that the gas system is ignited, and the gas mixture is sprayed into the cylinder through the nozzle according to the set flow rate and flow rate, establishing a pressure field at the bottom of the cylinder. When the pressure field reaches the set value, the locking device is sheared off, thereby pushing the projectile to move along the cylinder and projecting the projectile out.

[0003] At present, achieving low-overload high-speed projectiles in a limited space is still a technical difficulty that weapon systems need to solve. When projectiles are launched at high speed, the projectile is subjected to a large overload, which can easily cause damage to the electrical components in the projectile, resulting in the projectile being unable to enter the normal working mode; in addition, the existing projectile devices (especially square projectile devices) have poor airtightness and fast pressure release, resulting in poor projectile stability, low projectile speed and other problems, and may even cause projectile failure. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a projectile device with simple structure, low cost, easy manufacture and assembly, stable and reliable operation, good sealing and pressure retention, and good projectile stability. A projectile method using the projectile device to achieve high-speed and low-overload projectile is also provided.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A projectile device comprises a projectile tube, a base connected to the projectile tube and closing an opening at one end of the projectile tube, a piston located in the projectile tube and a locking device arranged on the projectile tube for locking the projectile located in the projectile tube, an air cavity is enclosed between the base and the piston, a gas generating assembly is mounted on the base, an annular flexible seal is sleeved and mounted on the piston, an inflatable inner cavity for filling gas to force the annular flexible seal to expand and deform so that the annular flexible seal is in close contact with the inner wall of the projectile tube is provided between the annular flexible seal and the piston, and the inflatable inner cavity has an inflatable port connected to the air cavity.

[0007] In the above-mentioned projectile device, preferably, the annular flexible seal has a through hole mounted on the piston, and a countersunk hole is provided at one end of the through hole close to the air cavity, and the countersunk hole and the outer wall of the piston are combined to form the inflation cavity, and the open end of the countersunk hole and the outer wall of the piston are combined to form an annular opening as the inflation port.

[0008] The above-mentioned projectile device is preferably provided with annular guide bosses at both ends of the piston for guiding and cooperating with the inner wall of the projectile tube, an annular receiving groove is formed between the two annular guide bosses, the annular flexible seal is installed in the annular receiving groove, and the two ends of the annular flexible seal are respectively abutted against the annular guide bosses at both ends of the piston, and a connecting channel connecting the air cavity and the inflation port is provided on the annular guide boss close to the air cavity.

[0009] In the above-mentioned projectile device, preferably, the connecting passage is a connecting hole.

[0010] In the above-mentioned projectile device, preferably, the projectile tube and the piston are both square, and connecting channels connecting the air cavity and the inflation port are provided at the four side positions of the square piston.

[0011] In the above-mentioned projectile device, preferably, the annular flexible seal is in contact with the inner wall of the projectile tube when not inflated.

[0012] In the above-mentioned projectile device, preferably, the gas generating assembly includes a plurality of gas generators mounted on a base for generating high-pressure gas to be filled into the gas cavity.

[0013] The above-mentioned launching device, preferably, the multiple gas generators include a main gas generator and four auxiliary gas generators, the main gas generator is located on the center line of the launching tube, and the four auxiliary gas generators are divided into two pairs of two, and the two auxiliary gas generators in each pair are symmetrically arranged relative to the center line of the launching tube.

[0014] In the above-mentioned projectile device, preferably, the main gas generator and the auxiliary gas generator are installed in threaded through holes provided on the base by means of threaded connection.

[0015] As a general technical concept, the present invention also provides a projectile method of the above-mentioned projectile device, which is as follows: after the projectile is loaded into the projectile tube and locked by a locking device, a pair of auxiliary gas generators are first ignited, and the pair of auxiliary gas generators generate pressurized gas and fill the air cavity; after the locking device releases the lock on the projectile and the projectile starts to move, the main gas generator is ignited after a first preset time, and the main gas generator generates pressurized gas to force the projectile to accelerate; after a second preset time, one of the remaining pair of auxiliary gas generators is ignited to replenish the pressure in the air cavity, and after a third preset time, the other of the remaining pair of auxiliary gas generators is ignited to further replenish the pressure in the air cavity, so that the projectile is projected out of the projectile tube.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The projectile device of the present invention is provided with an annular flexible seal sleeved on the piston, an inflatable inner cavity is provided between the annular flexible seal and the piston, and the inflatable inner cavity has an inflating port connected to the gas cavity. When projectile is fired, the high-pressure gas generated by the gas generating assembly enters the gas cavity and enters the inflatable inner cavity through the inflating port, so that the annular flexible seal expands and deforms to be in close contact with the inner wall of the projectile tube, forming an extrusion seal, which can improve the sealing between the piston and the inner wall of the projectile tube, reduce gas leakage, make the pressure-maintaining effect of the gas cavity good, increase the effective work of the high-pressure gas, and improve the projectile stability. The projectile device also has the advantages of simple structure, low cost, easy manufacture and assembly, and stable and reliable operation.

[0018] The projectile method of the present invention not only has the advantages of the projectile device of the present invention, but also can realize low-overload high-speed projectile, and is easy to implement and popularize. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main cross-sectional structure of the ejection device.

[0020] Figure 2 It is a schematic diagram of the structure of the ejection device from an upward perspective.

[0021] Figure 3 It is a schematic diagram of the piston structure from a bottom up view.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the piston.

[0023] Legend:

[0024] 1. Projectile tube; 11. Air cavity; 2. Base; 3. Piston; 31. Annular guide boss; 32. Annular receiving groove; 33. Connecting hole; 4. Locking device; 5. Annular flexible seal; 6. Main gas generator; 7. Auxiliary gas generator; 100. Inflatable inner cavity; 200. Inflatable port. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 4As shown, the projectile device of this embodiment includes a projectile tube 1, a base 2 connected to the projectile tube 1 and closing an opening at one end of the projectile tube 1, a piston 3 located in the projectile tube 1, and a locking device 4 provided on the projectile tube 1 for locking the projectile located in the projectile tube 1, an air cavity 11 is surrounded by the base 2 and the piston 3, a gas generating assembly is installed on the base 2, an annular flexible seal 5 is sleeved and installed on the piston 3, an inflatable inner cavity 100 for filling gas to force the annular flexible seal 5 to expand and deform so that the annular flexible seal 5 is in close contact with the inner wall of the projectile tube 1 is provided between the annular flexible seal 5 and the piston 3, and the inflatable inner cavity 100 has an inflating port 200 communicating with the air cavity 11. The projectile device is provided with an annular flexible seal 5 mounted on the piston 3, and an inflatable inner cavity 100 is provided between the annular flexible seal 5 and the piston 3, and the inflatable inner cavity 100 has an inflating port 200 connected to the gas cavity 11. When projectile is launched, the high-pressure gas generated by the gas generating assembly enters the gas cavity 11, and then enters the inflatable inner cavity 100 through the inflating port 200, so that the annular flexible seal 5 expands and deforms to be in close contact with the inner wall of the projectile tube 1, forming an extrusion seal, which can improve the sealing between the piston 3 and the inner wall of the projectile tube 1, reduce gas leakage, make the pressure-maintaining effect of the gas cavity 11 good, increase the effective work of the high-pressure gas, and improve the projectile stability. The projectile device also has the advantages of simple structure, low cost, easy manufacture and assembly, and stable and reliable operation.

[0027] In this embodiment, the annular flexible seal 5 has a through hole that is sleeved on the piston 3. A countersunk hole is provided at one end of the through hole close to the air cavity 11. The countersunk hole and the outer wall of the piston 3 are combined to form an inflation cavity 100. The open end of the countersunk hole and the outer wall of the piston 3 are combined to form an annular opening as an inflation port 200. On the one hand, it is only necessary to make an annular flexible seal 5 with a countersunk hole at one end of the through hole, and to sleeve the annular flexible seal 5 on the piston 3 to form an inflation cavity 100 and an inflation port 200. The manufacture is simple and low in cost. Compared with directly making an independent cavity on the annular flexible seal 5, the thickness and size of the annular flexible seal 5 can be reduced, and the space between the piston 3 and the projectile tube 1 for installing the annular flexible seal 5 can be reduced, so that a larger size space for inserting projectiles can be reserved inside the piston 3, thereby improving the compactness of the structure. On the other hand, after the inflation cavity 100 is filled with gas, only a part of the annular flexible seal 5 close to the air cavity 11 expands and tilts outwards, and is in close contact with the projectile tube 1, and the rest of the annular flexible seal 5 does not expand and deform, which not only has good sealing performance, but also reduces the contact surface area of ​​the annular flexible seal 5 in close contact with the inner wall of the projectile tube 1 due to expansion and deformation, which is conducive to reducing friction and energy loss.

[0028] In this embodiment, an annular guide boss 31 is provided at both ends of the piston 3 to cooperate with the inner wall of the projectile tube 1, an annular receiving groove 32 is formed between the two annular guide bosses 31, and the annular flexible seal 5 is installed in the annular receiving groove 32, and the two ends of the annular flexible seal 5 are respectively against the annular guide bosses 31 at both ends of the piston 3, and a connecting channel connecting the air cavity 11 and the inflation port 200 is provided on the annular guide boss 31 near the air cavity 11. This installation structure makes the installation of the annular flexible seal 5 stable and reliable, with good sealing performance, easy to process, manufacture and assemble, and makes full use of the piston 3's own structure for sealing and guiding, which is conducive to ensuring the sealing and guiding performance.

[0029] In this embodiment, the communication channel is a communication hole 33 , which will not affect the sealing and guiding performance between the structure of the piston 3 itself and the inner wall of the projectile tube 1 .

[0030] In this embodiment, the projectile tube 1 and the piston 3 are both square, and the four sides of the square piston 3 are provided with communication channels connecting the air chamber 11 and the inflation port 200. The annular flexible seal 5 is expanded and deformed quickly and evenly, which is conducive to improving the stability and reliability of the seal, especially when the gap between the projectile tube 1 and the piston 3 is a square gap, this structural form can greatly improve the stability and reliability of the seal, while ensuring the structural strength of the piston 3 itself.

[0031] In this embodiment, the annular flexible seal 5 contacts the inner wall of the projectile tube 1 when not inflated, and the sealing performance of the annular flexible seal 5 is good when not inflated.

[0032] In this embodiment, the gas generating assembly includes a plurality of gas generators mounted on the base 2 for generating high-pressure gas to be filled into the gas cavity 11. By providing a plurality of gas generators, the gas generators can be ignited in batches during projectile firing, and the time for filling the gas cavity 11 can be extended, thereby greatly reducing the impact overload on the projectile, avoiding damage to the electrical components in the projectile, ensuring normal firing, and achieving the purpose of low-overload high-speed projectile firing.

[0033] In this embodiment, the multiple gas generators include a main gas generator 6 and four auxiliary gas generators 7. The main gas generator 6 is located on the center line of the projectile tube 1. The four auxiliary gas generators 7 are divided into two pairs, with two as a pair. The two auxiliary gas generators 7 in each pair are arranged symmetrically with respect to the center line of the projectile tube 1. In the process of igniting the gas generators in batches, when the two auxiliary gas generators 7 of a pair are ignited at the same time, the positions where the high-pressure gases generated by the two auxiliary gas generators 7 enter the gas cavity 11 are symmetrical with respect to the center line of the projectile tube 1, and the force acting on the projectile is uniform, which can improve the stability of the projectile projection.

[0034] In this embodiment, the main gas generator 6 and the auxiliary gas generator 7 are installed in the threaded through hole provided on the base 2 by threaded connection. It has good sealing performance and is easy to load and unload. Preferably, thread glue is applied on the connecting thread to further improve the sealing performance.

[0035] In this embodiment, preferably, the base 2 has an insertion portion inserted into the projectile tube 1 to form a positioning, and the insertion portion and the projectile tube 1 are connected and fastened by screws, so that the installation of the base 2 is stable and reliable, and the sealing of the base 2 and the projectile tube 1 is good. The outside of the projectile tube 1 and the base 2 are wrapped with non-metallic winding such as glass fiber or carbon fiber to ensure the sealing and structural consistency. The annular flexible seal 5 is made of rubber material. The locking device 4 fixes the projectile in the projectile tube 1 when not projecting, and locks the projectile during projectile projection to establish the projectile pressure. The locking device 4 adopts the existing technology, and there are mainly two types of locking devices, one is a locking pin type locking mechanism that is cut off after reaching the preset shear force, and the other is a controllable locking mechanism that can control the movement of the projectile and release the blocking effect.

[0036] A projectile method of the projectile device is as follows: after the projectile is loaded into the projectile tube 1 and locked by the locking device 4, a pair of auxiliary gas generators 7 are first ignited, the pair of auxiliary gas generators 7 generate pressurized gas and fill it into the air cavity 11, and at the same time enter the annular flexible seal 5 from the connecting channel on the piston 3, so that the annular flexible seal 5 expands and deforms to prevent gas leakage; as the pressure in the air cavity 11 continues to increase, the force of the piston 3 pushing the projectile toward the outlet of the projectile tube 1 continues to increase, and when the pushing force of the piston 3 reaches a certain value, the locking device 4 releases the pressure. The projectile is locked and starts to move. After a first preset time, the main gas generator 6 is ignited, and the main gas generator 6 generates pressurized gas that quickly fills the air cavity 11, forcing the projectile to accelerate. As the projectile accelerates, the amount of pressurized gas generated by the main gas generator 6 decreases. After a second preset time, one of the remaining pair of auxiliary gas generators 7 is ignited to replenish the pressure in the air cavity 11. After a third preset time, the other of the remaining pair of auxiliary gas generators 7 is ignited to further replenish the pressure in the air cavity 11, so that the projectile is ejected out of the projectile tube 1.

[0037] The projectile method of the projectile device uses a main gas generator 6 and multiple auxiliary gas generators 7 to ignite in batches in a predetermined order and time, which can extend the time for inflating the air cavity 11, thereby greatly reducing the impact overload of the projectile, avoiding damage to the electrical components in the projectile, ensuring normal launch, and achieving the purpose of low-overload high-speed projectile. By reasonably designing the ignition sequence and time of a main gas generator 6 and multiple auxiliary gas generators 7, stable and satisfactory projectile can be achieved. It is easy to implement and promote application.

[0038] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A projectile device, comprising a projectile tube (1), a base (2) connected to the projectile tube (1) and closing an opening at one end of the projectile tube (1), a piston (3) located in the projectile tube (1), and a locking device (4) provided on the projectile tube (1) for locking the projectile in the projectile tube (1), wherein an air cavity (11) is formed between the base (2) and the piston (3), and a gas generating assembly is installed on the base (2), characterized in that: An annular flexible seal (5) is sleeved and mounted on the piston (3); an inflatable inner cavity (100) is provided between the annular flexible seal (5) and the piston (3) for filling gas to force the annular flexible seal (5) to expand and deform so that the annular flexible seal (5) is in close contact with the inner wall of the projectile tube (1); the inflatable inner cavity (100) has an inflatable port (200) connected to the gas cavity (11); The annular flexible seal (5) has a through hole sleeved on the piston (3), and a countersunk hole is provided at one end of the through hole close to the air cavity (11), the countersunk hole and the outer wall of the piston (3) are combined to form the inflation cavity (100), and the open end of the countersunk hole and the outer wall of the piston (3) are combined to form an annular opening serving as the inflation port (200).

2. The projectile device according to claim 1, characterized in that: An annular guide boss (31) is provided at both ends of the piston (3) for guiding and cooperating with the inner wall of the projectile tube (1); an annular receiving groove (32) is formed between the two annular guide bosses (31); the annular flexible seal (5) is installed in the annular receiving groove (32); and the two ends of the annular flexible seal (5) are respectively abutted against the annular guide bosses (31) at both ends of the piston (3); and a communication channel connecting the air cavity (11) and the inflation port (200) is provided on the annular guide boss (31) close to the air cavity (11).

3. The projectile device according to claim 2, characterized in that: The communication channel is a communication hole (33).

4. The projectile device according to claim 2, characterized in that: The projectile tube (1) and the piston (3) are both square in shape, and communication channels connecting the air cavity (11) and the inflation port (200) are provided at four side positions of the square piston (3).

5. The projectile device according to claim 1, characterized in that: The annular flexible seal (5) is in contact with the inner wall of the projectile tube (1) when not inflated.

6. The projectile device according to any one of claims 1 to 5, characterized in that: The gas generating assembly comprises a plurality of gas generators mounted on a base (2) and used for generating high-pressure gas to be filled into the gas cavity (11).

7. The projectile device according to claim 6, characterized in that: The plurality of gas generators include a main gas generator (6) and four auxiliary gas generators (7), wherein the main gas generator (6) is located on the center line of the projectile tube (1), and the four auxiliary gas generators (7) are divided into two pairs, with two auxiliary gas generators (7) in each pair being symmetrically arranged relative to the center line of the projectile tube (1).

8. The projectile device according to claim 7, characterized in that: The main gas generator (6) and the auxiliary gas generator (7) are installed in threaded through holes provided on the base (2) by means of threaded connection.

9. A projectile method of the projectile device according to claim 7, characterized in that: The projectile method comprises the following steps: after a projectile is loaded into a projectile tube (1) and locked by a locking device (4), a pair of auxiliary gas generators (7) are first ignited, the pair of auxiliary gas generators (7) generate pressurized gas and fill the air cavity (11); after the locking device (4) releases the projectile and the projectile starts to move, the main gas generator (6) is ignited after a first preset time, the main gas generator (6) generates pressurized gas to force the projectile to accelerate; after a second preset time, one of the remaining pair of auxiliary gas generators (7) is ignited to replenish the pressure in the air cavity (11); and after a third preset time, the other of the remaining pair of auxiliary gas generators (7) is ignited to further replenish the pressure in the air cavity (11), so that the projectile is projected out of the projectile tube (1).

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